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Direct linkHula, William D.; Fergadiotis, Gerasimos; Martin, Nadine – American Journal of Speech-Language Pathology, 2012
Purpose: The purpose of this study was to identify the most appropriate item response theory (IRT) measurement model for aphasia tests requiring 2-choice responses and to determine whether small samples are adequate for estimating such models. Method: Pyramids and Palm Trees (Howard & Patterson, 1992) test data that had been collected from…
Descriptors: Sample Size, Guessing (Tests), Aphasia, Item Response Theory
